1 /*
2 * Copyright 1995-2024 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10 #include <stdio.h>
11 #include "internal/cryptlib.h"
12 #include <openssl/buffer.h>
13 #include <openssl/asn1.h>
14
15 #ifndef NO_OLD_ASN1
16
17 # ifndef OPENSSL_NO_STDIO
ASN1_i2d_fp(i2d_of_void * i2d,FILE * out,const void * x)18 int ASN1_i2d_fp(i2d_of_void *i2d, FILE *out, const void *x)
19 {
20 BIO *b;
21 int ret;
22
23 if ((b = BIO_new(BIO_s_file())) == NULL) {
24 ERR_raise(ERR_LIB_ASN1, ERR_R_BUF_LIB);
25 return 0;
26 }
27 BIO_set_fp(b, out, BIO_NOCLOSE);
28 ret = ASN1_i2d_bio(i2d, b, x);
29 BIO_free(b);
30 return ret;
31 }
32 # endif
33
ASN1_i2d_bio(i2d_of_void * i2d,BIO * out,const void * x)34 int ASN1_i2d_bio(i2d_of_void *i2d, BIO *out, const void *x)
35 {
36 char *b;
37 unsigned char *p;
38 int i, j = 0, n, ret = 1;
39
40 n = i2d(x, NULL);
41 if (n <= 0)
42 return 0;
43
44 b = OPENSSL_malloc(n);
45 if (b == NULL)
46 return 0;
47
48 p = (unsigned char *)b;
49 i2d(x, &p);
50
51 for (;;) {
52 i = BIO_write(out, &(b[j]), n);
53 if (i == n)
54 break;
55 if (i <= 0) {
56 ret = 0;
57 break;
58 }
59 j += i;
60 n -= i;
61 }
62 OPENSSL_free(b);
63 return ret;
64 }
65
66 #endif
67
68 #ifndef OPENSSL_NO_STDIO
ASN1_item_i2d_fp(const ASN1_ITEM * it,FILE * out,const void * x)69 int ASN1_item_i2d_fp(const ASN1_ITEM *it, FILE *out, const void *x)
70 {
71 BIO *b;
72 int ret;
73
74 if ((b = BIO_new(BIO_s_file())) == NULL) {
75 ERR_raise(ERR_LIB_ASN1, ERR_R_BUF_LIB);
76 return 0;
77 }
78 BIO_set_fp(b, out, BIO_NOCLOSE);
79 ret = ASN1_item_i2d_bio(it, b, x);
80 BIO_free(b);
81 return ret;
82 }
83 #endif
84
ASN1_item_i2d_bio(const ASN1_ITEM * it,BIO * out,const void * x)85 int ASN1_item_i2d_bio(const ASN1_ITEM *it, BIO *out, const void *x)
86 {
87 unsigned char *b = NULL;
88 int i, j = 0, n, ret = 1;
89
90 n = ASN1_item_i2d(x, &b, it);
91 if (n < 0 || b == NULL) {
92 ERR_raise(ERR_LIB_ASN1, ERR_R_ASN1_LIB);
93 return 0;
94 }
95
96 for (;;) {
97 i = BIO_write(out, &(b[j]), n);
98 if (i == n)
99 break;
100 if (i <= 0) {
101 ret = 0;
102 break;
103 }
104 j += i;
105 n -= i;
106 }
107 OPENSSL_free(b);
108 return ret;
109 }
110
ASN1_item_i2d_mem_bio(const ASN1_ITEM * it,const ASN1_VALUE * val)111 BIO *ASN1_item_i2d_mem_bio(const ASN1_ITEM *it, const ASN1_VALUE *val)
112 {
113 BIO *res;
114
115 if (it == NULL || val == NULL) {
116 ERR_raise(ERR_LIB_ASN1, ERR_R_PASSED_NULL_PARAMETER);
117 return NULL;
118 }
119
120 if ((res = BIO_new(BIO_s_mem())) == NULL)
121 return NULL;
122 if (ASN1_item_i2d_bio(it, res, val) <= 0) {
123 BIO_free(res);
124 res = NULL;
125 }
126 return res;
127 }
128
